Chemistry Reference
In-Depth Information
1
The particulate nature of matter
Solids, liquids and gases
The kinetic theory of matter
Explaining the states of matter
Diffusion - evidence for moving particles
Brownian motion
Checklist
Changes of state
An unusual state of matter
An unusual change of state
Heating and cooling curves
Additional questions
Chemistry is about what
matter
is like and how it
behaves, and our explanations and predictions of
its behaviour. What is matter? This word is used to
cover all the substances and materials from which
the physical universe is composed. There are many
millions of different substances known, and all of
them can be categorised as solids, liquids or gases
(Figure 1.1). These are what we call the
three states
of matter
.
b
liquid
a
solid
c
gas
